DALLAS -- A suspect who died after a standoff with Dallas police said he wanted to kill white people -- especially white officers -- and that he was upset about "the recent police shootings," and that he acted alone, Dallas Police Chief David Brown told reporters Friday.
The suspect eventually was killed by a bomb that authorities detonated, Brown said.
"We saw no other option but to use our bomb robot and place a device on its extension for it to detonate where the suspect was," Brown said. "Other options would have exposed our officers to grave danger. The suspect is deceased as a result of detonating the bomb."
Five police officers were killed and seven others were injured in the ambush in Dallas that began Thursday night, officials have said, in the deadliest single incident for U.S. law enforcement since September 11, 2001. Two civilians also were injured in the shootings, the office of Dallas' mayor has said.
Most of the injured Dallas police officers have been released from a hospital, Brown told reporters. The officers' conditions are improving, Brown said.
"All I know is that this must stop -- this divisiveness between our police and our citizens," Brown said. "We don't feel much support most days. Let's not make today most days. Please, we need your support to be able to protect you from men like these, who carried out this tragic, tragic event."
Brown said an investigation into the ambush continues.
"I'm not going to be satisfied until we've turned over every stone. We've got some level that this one suspect did do some of the shooting. But we're not satisfied that we've exhausted every lead," he said. "So if there's someone out there who's associated with this, we will find you, we will prosecute you, and we will bring you to justice."